A method of objectively measuring the spatial capabilities of multichannel sound systems has been investigated. The method involves the comparison of interaural cross correlation (IACC) measurements taken in a concert hall to IACC measurements taken in reproduced versions of the same concert hall. The type of reproduction system was varied and an indication of the spatial capabilities of each system was gained from the comparison of original and reproduced IACC measurements. The comparisons revealed that all the reproduction systems were unable to match the lowest IACC readings taken in the concert hall and that the measurement method was capable of discriminating between the spatial performances of the reproduction systems and also to rank the system's performances in an expected order.
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